Process of separating metal plates



PROCESS OF SEPARATING METAL PLATES.

APPLICATION FILED MAY 2'4. 1919.

C. E. BAILEY.

Patented Mar. 23, 1920.

f G IZEP ii it "nwrirnn STAT 5$ h OFFICE CHARLES 13 BAILEY, YQUNGSTOWN, OHIO.

PROCESS 0T1 fiEPARI-LTING METAL PLATES.

laminae.

Application filed. May 24, 1919.

To all whom it may concern:

Be it known that I, Crmnnns E. Barrier, citizen of the United States, residing at liloungstown, in the county of Mahoning and iiitate of Uhio, have invented certain new and useful Improvements in Processes of Separating Metal Plates, of which the following is a specification.

This invention relates to the separation of sheets of metal which are caused to adhere with more or less tenacity by some step or treatment in the process of their manufacture.

In order to illustrate the principles involved, the case of steel sheets, such as are used in the manufacture of the socalled tin plate will be considered although it will be understood that the method and devices which are applicable here may also be used with the proper modifications in many other cases where metal sheets require separation.

In the process of manufacturing steel plate there is a step after the steel has been rolled down to a certain thickness in which it is folded double upon itself several times and the entire pack afterward rolled thercby reducing the thickness of each sheet uniformly until the individual sheets have the required thickness. This is, of course, done while the pack is hot, and as a result of the combined heat, pressure and rolling, the sheets become fastened together, partly due to the very intimate contact between the adjacent plates, or the forming of an incipient weld, which generally extends only over a portion of the contacting surface.

In the present process of manufacture, after the plates have been reduced in thickness as far as desired, they are separated by a slow and expensive hand process, cleaned, pickled and placed in stacks for annealing. After annealing they are removed from the annealing ovens, cleaned, pickled and separated and again rolled, usually cold, thus producing the finished plate ready for the application of tin, zinc or the galvanizing process.

From this description it will be evident that present commercial processes usually require the stacks of plates to he opened twice in the course of the manufacture of the sheets and that the hand process now in use is slow, and expensive besides producing considerable scrap.

The object of this invention is therefore Specification of Letters Patent.

Patented Mar. 23, 1920.

Serial No. 299,665.

to provide a simple, quick and inexpensive method of separating the plates.

A further object of the invention is to provide a frame carrying bed rollers, the same used to draw the pack over a right angled shoulder thereby causing the pack to pass through two right angled turns.

A. further object is to provide changeable friction corners.

A still further object is to provide means for adjusting the degree in which the pack must be bent in passing under and over the two right angles used in the process of destroying the adhesion between the sheets.

The invention may be put into practice by an apparatus substantially as shown in the accompanying drawing, wherein Figure 1 is a sectional side view with the exception of the side rollers.

Fig. 2 is a detail perspective view showing path over which the pack must pass when drawn through by the bed rollers.

Fig. 3 is a perspective detail view of depressing arm.

In the drawings, 1 designates the machine frame. 2 are shafts supporting the depressing arms 3. t indicates the bed rollers located between the frame parts 1 of the device.

By referring to Fig. 2 it will be seen that a bed 5 rests upon a support 6 of the lower portion of the frame 1. vVhen desired these bed plates 5 may be adjusted by means of the varying thickness of the plates used or by using fillers between supports 6 and the under side of the bed plates It will also be seen by referring to Fig. 2 that I have provided removable friction corners 7 which are dove tailed into the shoulders 8. These friction corners 7 are provided with detachable and reversible plates 9 held in place by lugs 10.

Fig. 3 shows the depressing arms 3 also equipped with friction corners 7 which are in turn supplied with detachable and reversible plates 9. When it is desired to give the pack less than a double bend I have provided adjusting blocks 11 as shown in Fig. 2 which come in contact with the depressing arms 3 when the same are drawn toward the shoulders 8 as shown in Fig. 1 when the pack 12 is being pulled through the machine by means of the bed rollers 4. It will be obvious that the adjusting blocks 11 may be adjusted by means fillers placed between .is swung downwardly, the pack12 is caused to be drawn over the shoulder 8 thereby causing the pack to pass through double and opposite bends. The rollers continue to pull the pack 12 to the left as showninFig. 1 ,until the right end of the pack 12reaches the point Yof-thebed rolls at. At this point the rolls are reversed and the pack 12 again travels "to the right. During this process the left depressing arm 3 isv lowered before the left-end of the pack 12, which remains unopened, has passed the opening 13.

..In order to make the operation clear it may besaid that whenthe bed rolls a are pulling the pack to the right the right arm is swung outwardlyand remains so. Then the pack is being pulled through the bed rolls 4 to the left,- the. left depressing arm is swung outwardly and remains so, or the each end of the lower portion, bed rolls lo- 'eated w1th1n sald frame, and depressing arms pivotally swung so as to engage said shoulders, the above mentloned rolls thereby drawing the pack of sheets through a fixed path thereby giving the pack double 1 and opposite bends.

2. In a device of the class described, a. frame portion provided with shoulders at each end, bed rolls located within said frame, depressing arms pivotally mounted to swing so as to engage said shoulders, the above mentioned rolls thereby drawing the pack of sheets through a fixed path thereby giving the pack double and opposite bends, a reversible and detachable plate, an adjustable bed plate, and means 'loradjusting the swing of the depressing arms.

In testimony whereof I atliX my signature.

CHARLES E. BAILEY.

lVitnesses CHARLES A. HARPMAN. J. B. HARPMAN. 

